The trial of Muslim Brotherhood Supreme Guide Mohamed Badie, his deputy Khairat al-Shater and four other Brotherhood leaders was adjourned on Sunday to October 29, state-owned news site EgyNews reported.

The Cairo Criminal Court adjourned the trial because the defendants were not present due to security concerns, the site said.

The six Brotherhood leaders are accused of murder and inciting the killing of protesters in front of the group’s headquarters in Moqattam on June 30.

Badie, Shater and Mohamed Rashad Bayoumi, another Brotherhood leader, are accused of conspiring with and inciting the three other defendants and other unidentified assailants to kill protesters. They are also charged with possession of explosives, rifles, and other weapons.

The general prosecution had previously announced that there is enough evidence to implicate the defendants in the murder of peaceful protesters in front of the Muslim Brotherhood’s headquarters.

On June 30, there were mass protests against the rule of then President Mohamed Morsi, who hails from the Brotherhood, as called for by the Tamarod (rebel) petition campaign. This led to clashes outside the Brotherhood’s headquarters, during which eight people were killed.